Carbureter.



K MEAR.

CARBUR APPLICATION miv MN. 22, 191

ETER..

Patented Sept. 12, 1916.

2 SHEETS-SHEET I.

p. c. MEARA. CARBURETER.

APPLICATION FILED IAN. 22| 1916 1,198,0/4'3, Patentod Sept. 12, 1916.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE,

DAVID C, MEARA,

OF TOLEDO, OHIO,

C ARBURETER xii( 1 mme Um Uil www

ml w1 Y... is

to conform to thv shape of thv inner surface of thc tube 25. The cylinder therefore is adjustably connected with the butter-tty valve ll which is, oscillatcd on its axis by the lvvvr l-f and thc two are operated together.

rl`hv innvr nu' vv of th"l c vlinilvr J3 is provided with 1w) surl'zu'lvs which diverge `troni thv ccntvr aud which are fiustuinal in forni. 'li'hv vvuivr of thv cylinder. whvn thv buttvrlly valve ll is rufarly closed` is located substantially at thv cud of the nozzle lt) whifh ivi located ou thivl cud wt thc tulle ll. The tube ll is' thrvmlvd into the bottoni ot' thv horn Yt. '['hv interior of thv tube however conuuuuisatvs with a passageway Ylz which is termed in the horn l. The horn l is threaded on thc lowvr vnd of the tube ila. The tube provided with the tlange lll which vlaiups thv lower vnd of the bowl Il about thv opening foi-ined in thv bottom thcrvof and also a washer ll when the horn -l is secured ou the vnd of the tube 35. Also thc hvad l is svrurcd to the top of the bowl l. rThe washer ll may be of ditlvrvnr thicknesses to tiringy the horn l. when the saine is tightly secured ou the vnd ot the tube $35.

'into any desired position relative. to the carburetvr or relativi' to the other mechanisms of thv engine. f

The bowl 3 is maintained partially full of gasolvnv or other liquid fuel. The f fasolenv or other h vdrocarbon fuel enters: thv passageway l2 and partially fills the tube yl1. ir enters thv horn l by reason of the suction produced in the operation of thv engine. in thc niauncr well known in thv art, and paesvv upward through the carbu rvtvr. through the tube 2lb and around the. tube lll. lt passes through thv cylinder 213 having;r thv contracted arca and thereby brought into contact with thv nozzle l() located on thv vnd of the tubil A11. The vv lociiy or rate of uiuvvu'uut of the air as it. passes thv nozzle l() will depend upon not only thv speed of thv engine which largl'cly controlled by the butter-ily valvc 1l, but also it will be dependent upon the extent ot' thv openingr formed by the but,- tvr-lly valve 1i and the relative position of the cylinder with rvl'vrvncv to the nozzle fh). The inner surface of the cylinder 25, according to its position relative to the noz/.lv tti will control the suction upon the gasolene or other liquid hydrocarbon which is fed to the tubv 4l from thv bow 3. This will also control the mixture so as to keep it substantially unit'orui. Vlt also operates to give a richness to the mixture when the engine is running at low speed thereby increasing the power of the engine at that time.

The nozzle t() is provided with a central pin opening which connects the interior of the tube ll] with the cone shaped recess 51V formingr thv exit of the nozzle40. As the .qasolenc drawn from the nozzle 11 whvn the butter-ily valve is still open and` the cylinder 25 consequently is drawn to a. position such that the contracted area of thv cylinder is slightly above the nozzle? thc gasoleue Si'nayed upward and laterally by reason of the shape of the exit 51V producing' thereby a thorough mixture of thv hydrocarbon and tl l air.

The nozzle vttl also provided with a passzrrnwvay 53 which extends from the interior ot the Luhe ill or nozzle al() to the shlv of thv nor/:Ale lt). The nozzle llt) is provided with a conical surface which slightly tial-vs outward toward the edge of thv nozzle l0. The air rising around the pipe ll is brought into intimate contact in its upward movement against the surface .32 and as it passes the openingr 51 by reason of its upward movement and its suction it readily draws vapor through the opening 5l. This particularly of value in starting` the engine and when the engine is operated at vvry low speed. l

The bowl il is provided with upwardly eX- tendingy lingers or cylindrical sectors which are provided with passageways (l1. The cylindrical forni of the lingers G0 operates to hold thv tlangl'v 41:3 of the tube in position and raises the point of entrance for the hydrocarbon into the passageway 42. The openings (31 being located well above thv bottom o'l' the bowl 3 receive a liquid hydrmfarbon which is substantially uniform in character. The heavier gasolene settles to thv bottoni of the howl 3 and below the upper ends of the passage-way (l1 also all sediment' will collect around the fingers G0 within thv bottoni of the bowl 3 and will not vutvr thv passageway The passageway lll communicate through the openings (1:3 formed in the washer 4l with a channel (32', located around the openingr in the horn l in which the tube 35 threaded. The annular lmssagv-way tl?) communicates with the passageway #l2 and feeds the gasolene into the assageway 42 which is taken from both sides of thv bowl and from above the bottoni of the bowl.

The gasoleue is fed into the bowl 3 through the pipe T0. lts flow is regulated by means ot' the needle valve 7l located on the vnd of a pin 72 which is supported in a suitable housingT T3 formed preferably integral with the bowl The needle valve 7l is provided with a seat formed in the plug Tt which is suitably connected with the pipe 70. cap is threaded into the upper end of the housing 73 and receives the upper end of the pin T2. By means of the plug 7l and the cap 75 the needle valve may be` readily assembled and connected with the float S0 which' may be made of cork or other suitable buoyantmaterial or formed With an air chamber therein to cause the saine t0 float on the surface of the hydrocarbon liquid which is received into the bowl 3. The float 80 is pivotally connected to the bowl 3 intermediate the housings 73 and the bowl 8,' by means of an arm 8l and pins 89, The outer end of the arm 8l is biturcated having furcations extending between a pair of flanges 83 formed on the pin 72 for the purpose of raising and lowering the pin 72 to open and close. the valve according to the level of the liquid within the bowl in a manner well known in the art.

The mixture of gasolene and the air is not only modified according to the position of the cylinde 25 but also by reason of the suction produced by the engine when running at intermediate speeds or at high speed on one or more auxiliary valves which are automatically opened to the temper mixture which is enriched by the wide opening of the butter-flyvalve 11. lVhen the engine runs at a highspeed at a moderate opening of the butter-fly valve ll and when the load on the engine is relatively small one or more auxiliary valves are automatically opened to give more air to the mixture and conseqnently dilute it.

The head 2 is provided with bosses 90 which extend radially from the axis of the head. lSleeves 91 having heads 92 are pushed with some pressure within the bosses 90. The sleeves 91, are provided with slots 93 in which are located ends ot cross-bars'fl. The ends of cross-bars 94 terminate in cylindrical surfaces 95 which conform to the inner surfaces of the bosses 90. Pius 9G are connected to the cross-bars 94. Disks 97 move along the pins 9G and are yieldingly held against the heads 92 by means of the springs 98 which are located intermediate to the cross-bars 9i and the disks 97. The springs 98 operate to seat the disks 97 with in the head 92. The springs differ in their tension so as to press the disks 97 yieldingiy outward with different pressures. By this means when the suctions within 'the head 2 are produced by various speeds of the engine, one or both of the auxiliary valves or disks will open, as the butterliy valve is located intermediate to the auxiliary valves and the engine, and the auxiliary valves will be opened according to the extent of the opening of the butter-fly valve which also controls the concentration of the mixture by reason of the interconnection of the butter-fly valve and the choke cylinder.

Means may be provided for heating the primary air which is supplied to the carbureter.

The consti-notion selected and described may be greatly modified in the arrangement and manufacture of its parts and in the sub stilution of elements having equivalent functions and such modifications may be used for many varied purpOSeS and Still Contain the invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is,-

1. In a carbureter the combination of a nozzle located within the air passage-way and having a cone-shaped outlet and a pin opening between the end of the outlet and the interior of the nozzle and having a flaring lateral outer surface and a pin opening connecting the interior of the nozzle to the lateral flaring surface of the nozzle 2. A carbureter having a hydrocarbon liquid fuel chamber, a boss located in the bottom of the liquid fuel chamber and extending upward toward the center of the chamber, an air horn, the boss and the air horn having a passageway, a nozzle mounted on the air horn and communicating with the pass: geway.

3. In a carbureter, the combination of a bowl for containing liquid hydrocarbon, an air horn for conducting air to the carburet'er, the air horn having an annular channel, the bowl having a channel registering with the first-named channel, and openings opening into the channels. the air horn having a passageway commun' :ating with the channel, a nozzle communicating with the passageway in the air horn.

4. A carbureter having a chamber for containing liquid hydrocarbon. an air horn for conducting primary air to the carbureter and having an annular channel and a passageway connecting the annular channel with the bottom of the air horn, a nozzle secured to the bottom of the horn and communicat ing with the passageway, the earbureter having passageways connecting the ,chamber for containing liquid hydrocarbon with the annular channel.

5. A carbureter having a chamber for containing liquid hydrocarbon, an air horn for conducting primary air to the carbureter and having an annular channel and a passageway connecting the annular channel with the bottom ot' the air horn, a nozzle secured to the bottom of the horn and communicating with the passageway, a boss located in the bottom of the liquid fuel chamber and extending toward the center of the liquid fuel chamber, the boss having a passageway communicating with the channel in the air horn.

(3. ln a` carbureter, the 'combination of a bowl for containing liquid hydrocarbon. a head having a mixing chamber and a tube, the tube extending through the bowl.v an air horn threaded on the tube for clamping the bowl between the air horn and the head, the bowl having a boss extending around the lower end oi the tube and upward toward the center of the bowl, the horn having an annular channel, the boss having a passageway registeringwith the channel, and the horn having a passageway connecting the channel to the bottom of the horn, a spray nozzle secured to the bottom of the horn and communicating with the last-named passagcway.

7, In a carbureter, the combination of a nozzle having a flaring lateral surface and a flaring opening in the center of the nozzle, and another opening extending laterally and angularly upward with respect to the axis of the nozzle to the flaring' lateral surface of the nozzle.

8, In a carburetor, the con'ibination of a mixing chamber, a chamber for containing liquid hydrocarbon, a protuberant part extending from the bottom of the chamber for containing liquid hydrocarbon, the protuberant part having a passageway extend- .ing tlfierethrough and through the bottom of the chamber for containing liquid hydrocarbon, an air horn having a channel tering with 'the passageway through the protuberant part and a passagevay formed in the end wall of the air horn and extend ing to the bottom of the air horn and communicating with the channel ot the air horn, a spray nozzle connected to the horn and communicating with the passageway of the horn, a heating means for heating the air passing to the air horn whereby the gasolene in the end wall of the air horn and that contained in the'nozzle and which passes through the nozzle is heated by the air that passes through the air horn.

9. A carbureter having a head containing al mixing chamber and a butterfly valve piv oted therein, the head having two laterally extending bosses, spring pressed valves located in the. bosses for permittingthe air to enter the mixing chamber, a capA located below the bosses, a bowl for containing liquid hydrocarbon, the head havling a tubular extension extending through the bowl, the bottom of the bowl having circular protuberant parts extending into the bowl, the protuberant parts having passageways extending therethrough, a horn threaded on to the tube and having a channel registering with the passageways of the protuberant parts, the wall of the horn having a passageway communicating with the channel, a nozzle secured to the bottom of the horn and communicating with the passageway in the horn and extending into 'the tubular extension of the head.

10. A carbureter having a head, a butterplatrev ily valve mounted in the head, a bowl for containing liquid hydrocarbon, the lhead having a tubular extension extending through the bowl, a cap plate for covering the bowl, the bottom of the bowl having circular protuberant parts extending into the bowl, the `protuberant parts having passageways, :i` horn threaded on to the tubular extension for securing the head, the bowl and the horn together, the horn having a channel registerii'ig with the openings in the protuberant parts, and a passageway located in the end wall of the horn and communicating with the channel, a nozzle extending into the tubular extension and coinmunicating with the passageway in the horn.

1l. ln a carbureter, the combination of a bowl for containing liquid hydrocarbon, a head having a mixing chamber, and a tubular extension extending through the bowl, an air horn threaded on the tube for clamping the bowl between the air horn and the head, the bottom of the bowl having circular protuberant parts partially surrounding the lower end of the tube and extending upward toward the center of the bowl, the protuberant parts having passageways and the air horn having a channel registering with the ends of the passageways of the protuberant parts, the end wall of the air horn having a passageway conununicating with the channel, and a nozzle secured in the air horn and connected with the passageway of the air horn.

12. A carburetor having a passageway, means for conducting primary air to the f assafewa a c linder havinUr two inner frustumal surfaces,the cylinder located in the passageway, a liquid hydrocarbon nozzlo having a Haring opening located in the passageway, the end of the nozzle. located in the contracted portion of the cylinder, means for moving the cylinder. to vary the suction of the liquid hydrocarbon through the iiaring opening of the nozzle and the mixture of the primary air with the liquid hydrocarbon, the carbureter having a mixing chamber located above the nozzle, auxiliary valves located in the wall of the mixing,r chamber, and means for permittingono or more of the valves to be opened according to the suction produced in the chamber.

In testimony whereof, I have hereunto signed my name to this specification.

DAVID o. MEARA. 

